Re: Planar PE1700-BK monitor
OK, finally got back to this project.
I dug out my Supco MFD10 Cap.Tester. I usually use this for my laundromat equipment, but it tests down to .01. All caps report within their range except C14, C15 and C23, C24. These do not give any reading. I removed C24 from the board and it still nothing. (I've realized as I write this that the tester might not read low enough, but it reads all others on the board and they are much smaller.)
Would it be possible that just these four on the transformer are bad? It would seem...
Tinbendr
Member
Last Activity: 09-06-2011, 05:18 AM
Joined: 08-05-2011
Location: Mississippi, USA
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Re: Planar PE1700-BK monitor
OK, I had a little time to work on the monitor. I decided to back up and reread the thread and some of the other sticky's on the board. I got a stronger, wider beam light source, a small flood light, to check the monitor. Much to my surprise (and embarrassment), the monitor actually IS displaying the image from the source.
But, knowing this, does this change the tests we've been conducting?...Leave a comment:
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Re: Planar PE1700-BK monitor
Yeah, I thought of that today. Definitely will be a weekend project.
Later,
David...Leave a comment:
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Re: Planar PE1700-BK monitor
1250et...Leave a comment:
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Re: Planar PE1700-BK monitor
Pin T2 T1
1-11 - 337Ω 337Ω
1-3 - 1270Ω 1279Ω
1-4 1266Ω 1274Ω
1-5 1266Ω 1272Ω
1-6 1265Ω 1270Ω
All other combination's were 0....Leave a comment:
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Re: Planar PE1700-BK monitor
With source connected, no reading from pin 6 at rest or when monitor is started.
No change when I unplug either backlight. (I'm assuming the backlights are the two white plugs in picture 1?) I still get the flash as illustrated in the video.
David...Last edited by Tinbendr; 08-09-2011, 05:01 PM.Leave a comment:
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Re: Planar PE1700-BK monitor
Bill, my apologies. I reread your 'back-to-basics' and realized I didn't have a source hooked up.
Pin 7 - 4.75v - steady
Pin 6 - Nothing
Pin 5 - 1.75 steady.
AlexAnna, the LED appears yellow (maybe green) to me. (See video)
[URL="http://gs133.photobucket.com/groups/q54/RLAMVQIHVT/?action=view¤t=Monitorturnon.mp4"]Monitor turn on[/URL]Re: Planar PE1700-BK monitor
Bill, my apologies. I reread your 'back-to-basics' and realized I didn't have a source hooked up.
Last edited by Tinbendr; 08-08-2011, 06:43 PM.Leave a comment:
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Re: Planar PE1700-BK monitor
It's definitely longer than 1/2 second. At least 3 sec for sure.Leave a comment:
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Re: Planar PE1700-BK monitor
.6Ω
.6Ω
pin 5 - 1.75v
pin 6 - 4.75v
pin 7 - 4.75v
All displayed this for approx 5 secs.
Yes...Leave a comment:
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Re: Planar PE1700-BK monitor
I'll check again when I get home.
OK, I was checking this wrong.
Yep. a firm's leftovers. History unknown, but all three exhibit the same symptoms.
And I do realize that they all may suffer different problems, but let's just take one at a time for now....Leave a comment:
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Re: Planar PE1700-BK monitor
It actually starts out about 1.0 then falls to .6 over about 5 secs.
Between each pin and chassis ground, correct?...Leave a comment:
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Re: Planar PE1700-BK monitor
Both are about .6
I do have 12v on 1 & 2.
5 is about .1 vbc anytime and 6, 7 don't read anything.
I even went back to look for the transistors because it's easier.
If I need to check the Q's, you'll have to instruct me on that....Leave a comment:
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Re: Planar PE1700-BK monitor
Ok. Connected the ribbon back to the monitor. Connected it to a laptop and I get the image of the laptop on the monitor for the same 1/2 second interval....Leave a comment:
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Re: Planar PE1700-BK monitor
Z-i-i-ing!! Did you hear that whiz over my head!!
Do you mean, "Do I have it connected to a VGA source?", then no, I do not....Leave a comment:
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Re: Planar PE1700-BK monitor
With the ribbon cable disconnected, the screen flashes white, then off. The PLED did not change....Leave a comment:
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Re: Planar PE1700-BK monitor
Don't know. There's not a mark on it.
12.6v...Leave a comment:
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Re: Planar PE1700-BK monitor
12 @ 3.33A
It was a towing trailer harness with bulb soldered in....Leave a comment:
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Planar PE1700-BK monitor
Rec'd three of these monitors. All have the same symptom. Flash of display, then black. Power LED is yellow all the time.
I only have a single power supply, but it appears to be working. Tested it with a small load (12v light bulbs) and voltage drop was 12.6 down to about 12.2v.
A word of warning. I an NOT a electronic technician. I am a aircraft mechanic by trade and can 'figure things out' when I set my mind to it. I know how to use a multimeter, but that's about it. While I understand most electronic concepts, I seem to struggle with how those concepts interact... -
Re: New Members - please post your introductions here
Greetings All!
David here from Mississippi.
I guess I'm here because I'm cheap, err, I mean frugal.
Aircraft mechanic by trade, DIY electronic technician by necessity.
I have three LCD monitors that I'm trying to bring back to life. A fellow named Scott from a web LCD parts site directed me here. My problem is that none of the caps show signs of bulging, but I have caught a thread or two about certain brands of caps that fail without any signs. I'll have to take a closer look...Leave a comment:
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